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1743611 
Technical Report 
AIR STRIPPING PROVIDES FAST SOLUTION FOR POLLUTED WELL WATER 
Shilling, RD 
1985 
0 
Pollution Engineering
ISSN: 0032-3640
EISSN: 1937-4437 
HMTC/85/0002135 
2 
2 
25-27; 1985 
English 
HMTC When one of Tacoma, Washington's 13 drinking wells was found to be contaminated with chlorinated organic solvents, a feasibility study to determine the most economical treatment method was authorized by the EPA. The two treatments evaluated were air stripping and activated carbon, and air air stripping was chosen over the carbon method because of cost. The organic solvents that contaminated the water were 1,1,2,2-tetrachloroethane, 1,2trans-dichloroethylene, trichloroethylene, and tetrachloroethylene. A system was designed to remove 1,1,2,2tetrachloroethane since it was the hardest solvent to extract; the other solvents would be removed along with it. Five modular air stripping towers, 12 feet in diameter and 50 feet in height, were constructed. The system achieved a 95 percent removal efficiency, and the effect on the air quality in surrounding areas was negligible because the solvents were diluted by high air flow. 
1; U209; 1; U079; trichloroethylene; U228; tetrachloroethylene; U210; Treatment Methods; Substance Identification; Management and Planning; Disposal; Monitoring; Remedial Actionleanup; Management and Planning Costs; Operatingaintenance Costs; Equipment Costs; Groundwaterurface Water Contamination; Halogenated Organics; Thrichloroethylenerichloroethane; Physical Treatment; Stripping; Case History